Shabbat: Tracking Device
Question
Can I wear a whoop fitness tracker on Shabbos? No screen, no phone connection, just collects data and stores on device until I connect back to phone after Shabbos.
Answer
Shalom!
Thank you for your question.
One is not permitted to wear such monitoring devices on Shabbat (unless a person has a life-threatening condition which requires constant surveillance and should verify with a Rav).
This is because one causes the device to “work” by recording one's motions, especially since the wearer desires seeing the results and readings.
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